4-19
4. Troubleshooting
4-1-8. No Video_Component
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source.
-
Check the chelsea.
-
This may happen when the LVDS Cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Yes
Check the Self Diagnosis
(Support
Self Diagnosis
Picture Test)
Dose the promblem still exist self diagnosis?
Does the CVBS data appear at
R809 / R814 (COMP1_Y) R810 (COMP1_PB)
R808 (COMP1_PR) R816 / R821 (COMP2_Y)
R817 (COMP2_PB) R815 (COMP2_PR)?
Does the digital data appear at
TP-EVE, EVEN_TXCLK-,
OD, ODD_TXCLK-?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'.
Input the component source properly.
Please, Contact Tech support.
Check CN504.
Change the Main Assy.
Check IC1001 (X5).
Change the Main Assy.
No
No
No
No
No
Power indicator LED is off.
Lamp (Backlight) on, no video?
Check the component source and check the
connection of component cables (Y, Pb, Pr)?
Check the LVDS Cable?
Check the T-Con Board?
Replace the LCD Panel?
5
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN26D450G1G
Страница 27: ...4 5 4 Troubleshooting Location Main TOP BD404 R805 R804 R806 BD405 ODD_TXCLK ODD_TXCLK EVEN_TXCLK EVEN_TXCLK ...
Страница 28: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 30: ...4 8 4 Troubleshooting Location Main TOP ODD_TXCLK ODD_TXCLK EVEN_TXCLK EVEN_TXCLK Pin 7 Pin 12 ...
Страница 31: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 33: ...4 11 4 Troubleshooting Location Main TOP ODD_TXCLK ODD_TXCLK EVEN_TXCLK EVEN_TXCLK Location Main BOTTOM 3 5 ...
Страница 34: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 36: ...4 14 4 Troubleshooting Location Main TOP ODD_TXCLK ODD_TXCLK EVEN_TXCLK EVEN_TXCLK Location Main BOTTOM 3 5 ...
Страница 37: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 39: ...4 17 4 Troubleshooting Location Main TOP ODD_TXCLK ODD_TXCLK EVEN_TXCLK EVEN_TXCLK R821 R816 R814 R809 ...
Страница 40: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 43: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 45: ...4 23 4 Troubleshooting Location Main TOP BD209 R550 R549 R419 R420 R R L L R525 R524 WAVEFORMS 7 Speaker out ...